<g:if test='${grailsApplication.config.googleAnalyticsAccountId?.size() > 0}'>
<g:javascript>
  var _gaq = _gaq || [];
  _gaq.push(['_setAccount', '${grailsApplication.config.googleAnalyticsAccountId}']);
  _gaq.push(['_trackPageview']);

  (function() {
  var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
  ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
  (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(ga);
  })();
</g:javascript>
</g:if>